... reduce effectiveness of one man fleets, which simply isn't being done to a large enough degree with this change to make a noticeable impact.

It becomes massively more annoying to set up...a higher barrier to entry and risk of pilot error.

There are other ways of reducing the major issues with boxing which have substantially less spill over, and are good for balance overall.

Still not in favor of this sort of ban, and even more so the use of the word "multiplexing" in regards to input, as this would imply that playing EVE with a keyboard for each hand that is connected to the same single toon is banned.

I see the spillover as unfortunate, as this has ripped the guts out of my main source of income, and having people coming in behind without the tools I used to get where I am means that much of the profit rate I have observed is impossible, or requires the sort of market playing genius that would make you rich in the RL stock market. This is the part I find unfortunate.

Incursions, at a scale which isn't feasible without at least some level of broadcasting.

Which is part of why I never ran my boxes in highsec, but kept to the less congested lowsec incursions. The added isk/hr when not engaged in PVP was nice too.

The prober and interdictor are irrelevant, since even with broadcasting they will be controlled separately. The only affect will be to bombers. Warping in and out will still be fleet warp, which means the only change is firing your bombs at the target which can be done round robin. If you read what the multiboxers that actually do this are saying, they don't feel they'll be impacted at all.